Installation problem : call to undefined function (5 posts)

Fatal error: Call to undefined function: did_action() in /hsphere/local/home/bertrama/bertramakers.com/wp-includes/functions.php on line 1345

The first time, I thought it was because my wp files weren't in my root folder, so I moved them, but that didn't work, I still keep getting the error. (I've moved the files back in a sub-directory now).